78 Chrysler 115hp wont go in gear..for. or rev.

snowman100

Cadet
Joined
Aug 13, 2005
Messages
6
Owned this boat 1 week, worked fine until i started the boat today and it wouldnt go in forward or reverse. Lots of throttle but just doesnt engage....Please help. There are few here in Atlantic Canada that work on these and ive ordered the Seloc manual. Im hoping its something simple. The engine is a 1978 Chrysler 115 hp. Thanks...
 

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 78 Chrysler 115hp wont go in gear..for. or rev.

I am not sure how the shift rod pin is located on your motor. Some are visible from the outside and some the lower unit needs to be lowered a bit to access it. If you are lucky this pin is the only thing that is the problem. If the pin is accessible without removing the lower unit it should be somewhere above the lower unit and possibly just above the motor leg.<br /><br />I would do this. Put motor in low throttle position and have a wife or kid move the forward neutral reverse shift back and forth while you wath the linkages in the motor. If linkages seem to move in the motor you will have to find that shift rod pin and see if it is still in place. If it fell out or broke only the top linkage will move up and down and the lower linkage will not move. If this is the case the fix is easy. If pivot screw on very bottom of the lower unit was removed and then again reinstalled it is not pretty. A lot of people mistake this screw as a drain or fill hole for the lower unit when it is actually the pivot point for the clutch on the lower unit. If this has lost its home position it will require the total dis assembly of the lower unit. Another possiblity is there is a small spring pin that holds the shift yoke to the shift coupler that could have broke. This will leave the motor usually in neutral. Here again the only fix is to tear apart the lower unit and replace the part. The good news is the part is cheap the bad news is if you have never taken one of these apart it will take some doing. www.chryslercrew has downloadable factory service and parts manuals for less money then a clymor or a syloc. <br /><br />Good Luck
 

snowman100

Cadet
Joined
Aug 13, 2005
Messages
6
Re: 78 Chrysler 115hp wont go in gear..for. or rev.

Originally posted by eurolarva:<br /> I am not sure how the shift rod pin is located on your motor. Some are visible from the outside and some the lower unit needs to be lowered a bit to access it. If you are lucky this pin is the only thing that is the problem. If the pin is accessible without removing the lower unit it should be somewhere above the lower unit and possibly just above the motor leg.<br /><br />I would do this. Put motor in low throttle position and have a wife or kid move the forward neutral reverse shift back and forth while you wath the linkages in the motor. If linkages seem to move in the motor you will have to find that shift rod pin and see if it is still in place. If it fell out or broke only the top linkage will move up and down and the lower linkage will not move. If this is the case the fix is easy. If pivot screw on very bottom of the lower unit was removed and then again reinstalled it is not pretty. A lot of people mistake this screw as a drain or fill hole for the lower unit when it is actually the pivot point for the clutch on the lower unit. If this has lost its home position it will require the total dis assembly of the lower unit. Another possiblity is there is a small spring pin that holds the shift yoke to the shift coupler that could have broke. This will leave the motor usually in neutral. Here again the only fix is to tear apart the lower unit and replace the part. The good news is the part is cheap the bad news is if you have never taken one of these apart it will take some doing. www.chryslercrew has downloadable factory service and parts manuals for less money then a clymor or a syloc. <br /><br />Good Luck
 

snowman100

Cadet
Joined
Aug 13, 2005
Messages
6
Re: 78 Chrysler 115hp wont go in gear..for. or rev.

eurolarva,<br />I just wanted to thank you very much for your advice and reply to my query. I went out to the cottage tonight and looked down above the lower unit and found no shift rod pin. I could see where it was supposed to be and upper linkage moving and lower stationary. I called and ordered a few on line at a price of $2.45 each. They will be here on friday and i should be mobile for the weekend. Thanks again.
 

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 78 Chrysler 115hp wont go in gear..for. or rev.

Cool :D Got to love the easy fixes. You really did not want to take that lower unit apart. Good luck.
 
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